The effort is part of a national campaign to urge people to adopt a lifesaving habit: change smoke detector and carbon monoxide detector batteries at the same time to change clocks from daylight-saving time each fall. Remember to change clocks before bedtime Saturday.

People can receive free nine-volt batteries at participating stores from 4-5:30 p.m. Saturday until the free batteries run out.

Find free batteries at the following stores:

Ace Hardware — 330 Main Ave. S., North Bend

Bartell Drugs — 526 228th Ave. N.E., Sammamish

Bartell Drugs — 5700 E. Lake Sammamish Parkway S.E., Issaquah

QFC — 4570 Klahanie Drive S.E., Klahanie

QFC — 31722 Eugene St., No. 1, Carnation

QFC — 2902 228th Ave. S.E., Sammamish

The Home Depot — 6200 E. Lake Sammamish Parkway S.E., Issaquah

Look for firefighters at several grocery store locations, as they spread the message and urge families to make a simple, lifesaving change.